SwissFEL makes protein structures visible

Successful pilot experiment on biomolecules at the newest large research facility of PSI

For the development of new medicinal agents, accurate knowledge of biological processes in the body is a prerequisite. Here proteins play a crucial role. At the Paul Scherrer Institute PSI, the X-ray free-electron laser SwissFEL has now, for the first time, directed its strong light onto protein crystals and made their structures visible. The special characteristics of the X-ray laser enable completely novel experiments in which scientists can watch how proteins move and change their shape. The new method, which in Switzerland is only possible at PSI, will in the future aid in the discovery of new drugs.

Less than two years after the X-ray free-electron laser SwissFEL started operations, PSI researchers, together with the Swiss company leadXpro, have successfully completed their first experiment using it to study biological molecules. With that, they have achieved another milestone before this new PSI large research facility becomes available for experiments, at the beginning of 2019, to all users from academia and industry. SwissFEL is one of only five facilities worldwide in which researchers can investigate biological processes in proteins or protein complexes with high-energy X-ray laser light.

>Read more on the SwissFEL website

Image: Michael Hennig (left) and Karol Nass at the experiment station in SwissFEL where their pilot experiment was conducted.
Credit: Paul Scherrer Institute/Mahir Dzambegovic